Taxaceae, Pinaceae 9 



Class I. CONIFERAE. Stem much branched. 

 No vessels in secondary wood. Leaves mostly narrow, 

 linear or lanceolate. Flowers diclinous. Perianth o or 

 bracteoid. Cotyledons 2-15, free. 



Fam. I. Taxaceae. (7^;^^/.y solitary or few. Seed 

 drupaceous exserted. 



Subfamily Taxoideae. Stamens with 3-8 pollen 

 sacs. Carpels with two ovules or the % floivcr reduced 

 to a single ovide. 



Tribe Taxeae. % flower reduced to a solitary 

 terminal ovnle. 



Only British genus (Mesophyll with no resin canals) : 



Taxus.' 



Fam. 2. Pinaceae. Resin canals always present in 

 leaves. Micro- and megasporophylls numerous, arranged 

 in cone-like yZ^ze'^rj". Seeds not exserted. 



Tribe i. Abietineae. Leaves spiral. Carpels divided 

 into cover-scales and ovuliferous scales, the latter with two 

 ovules side by side on the upper surface. 



I. Only long shoots present with spiral evergreen 

 leaves. 



Bark greyish white. Leaves flat, emarginate with 

 two white lines beneath. Cones erect, scales deciduous. 



*Abies. 



Bark reddish. Leaves 4-angled in section, acute. 

 Cones pendulous, scales persistent. *Picea. 



As Picea but leaves flat. *Tsuga (including *Pseudo- 

 tsuga with long 3-fid cover-scales). 



